/*
 * Copyright (c) 2009, Jeremy Sandell
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the author nor the names of its contributors
 *       may be used to endorse or promote products derived from this software
 *       without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <hl7/common.hpp>
#include <hl7/segment.hpp>
#include <hl7/except.hpp>
#include <hl7/util.hpp>

namespace hl7 {
    segment::segment(const std::vector<std::string> &data_,
                     const std::string &rsep,
                     const std::string &fsep,
                     const std::string &ssep) : hl7object("",rsep,fsep,ssep),
                                                data(data_)
    {}


    std::string segment::field(int index)
    {
        /* Complain if index is invalid. */
        if (index < 0 || index > int(data.size()))
            throw Exception("Index error");

            return data[index];
    }

    std::string segment::operator[](const int index)
    {
        if(int(data.size()) >= index)
            return data[index];
        else
            throw Exception("Index error");
    }

    std::vector<std::string>::iterator segment::begin(void)
    {
        std::vector<std::string>::iterator iter = data.begin();
        return iter;
    }

    std::vector<std::string>::iterator segment::end(void)
    {
        std::vector<std::string>::iterator iter = data.end();
        return iter;
    }
    std::string segment::tostring(void)
    {
#if 0
        /*TODO: make call to join work. */
        return util::join(data, this->fs());
#endif

        std::string combined;

        for(std::vector<std::string>::iterator iter = data.begin(); iter != data.end(); iter++)
        {
            combined.append((*iter));

            if(iter != data.end()-1)
                combined.append(fieldsep);
        }
        return combined;
    }

    std::ostream & operator<<(std::ostream &out, segment &s)
    {
        for(std::vector<std::string>::iterator iter = s.begin(); iter != s.end(); iter++)
        {
            out << (*iter);

            if(iter != s.end()-1)
                out << s.fs();
        }
        return out;
    }

    std::istream & operator>>(std::istream &in, segment &s)
    {
        std::string tmp;
        in >> tmp;
        s.data.push_back(tmp);
        return in;
    }
};
